<template>
	<view>
		
		<my-search @click="gotosearch"></my-search>
		
		<view class="srcoll-view-container">
		<!-- 左侧滚动区域 -->
		<scroll-view class="left-scroll-view" scroll-y="true" :style="{height: wh +'px'}">
			<block v-for="(item,i) in cateList" :key="i">
				<view :class="['left-scroll-view-item',i===active? 'active':'']" @click="activeChange(i)">{{item.cat_name}}</view>
			</block>
			
		</scroll-view>
		
		<!-- 右侧滚动区域 -->
		<scroll-view class="right-scroll-view" scroll-y="true" :style="{height: wh +'px'}" :scroll-top="scrolltop">	
		    <!-- 二级分类 -->
			<view class="right-scroll-view-level2" v-for="(item2,i2) in cateLevel2" :key="i2">
				<!-- 二级分类标题 -->
				<view class="level2-title">/{{item2.cat_name}}/</view>
				<!-- 该二级分类下的三级分类 -->
				<view class="cat-level3-list">
					<view class="cat-level3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
						<image :src="item3.cat_icon.replace('dev','web')" ></image>
						<text>{{item3.cat_name}}</text>
					</view>
				</view>
				
			</view>
		</scroll-view>
		</view>
	</view>
</template>

<script>
	import {mixinsTest} from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[mixinsTest],
		data() {
			return {
				wh:0,
				//一级分类列表
				cateList:[],
				active:0,
				cateLevel2:[],
				scrolltop:0
			};
		},
		onLoad() {
			const sysinfo=uni.getSystemInfoSync()
			this.wh=sysinfo.windowHeight-50//50px为搜索区高度
			this.getCateList()
			// console.log(this.cateList)
			
		},
		methods:{
			//获取分类列表数据
			async getCateList(){
				const {data:res} =await  uni.$http.get('/api/public/v1/categories')
				if(res.meta.status!==200)return uni.$showMsg()
				this.cateList=res.message,
				this.cateLevel2=this.cateList[0].children
			},
			activeChange(i){
				this.active=i,
				this.cateLevel2=this.cateList[i].children,
				this.scrolltop=this.scrolltop===0?1:0
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid='+item.cat_id
				})
			},
			gotosearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
			
		}
	}
</script>

<style lang="scss">
.srcoll-view-container{
	display: flex;
}
.left-scroll-view{
	width: 120px;
}
.left-scroll-view-item{
	background-color: #f7f7f7;
	line-height: 60px;
	text-align: center;
	font-size: 12px;
	&.active{
		background-color: #FFFFFF;
		position: relative;
		&::before{
			content: ' ';
			display:block;
			width: 3px;
			height: 30px;
			background-color: #F00000;
			position: absolute;
			top: 50%;
			left: 0;
			transform: translateY(-50%);
		}
	}
	
}
.right-scroll-view-level2{
	.level2-title{
		text-align: center;
		font-weight: bold;
		font-size: 12px;
		padding: 15px 0;
	}
}
.cat-level3-list{
	display: flex;
	flex-wrap: wrap;
	
	.cat-level3-item{
		width: 33.33%;
		display: flex;//自由排序
		flex-direction: column;//纵向排列
		justify-content: center;//纵向居中
		align-items: center;//横向居中
		margin-bottom: 10px;
		image{
			width: 60px;
			height: 60px;
		}
		text{
			font-size: 12px;
		}
	}
}
</style>
